Pro-Wave Electronics Corp.
Tel: 886-2-22465101
Fax: 886-2-22465105
E-mail: sales@pro-wave.com.tw
URL: http://www.prowave.com.tw
Pins Description:
Pin
1
Name
I_O
Description
Input/Output
Pin
Name
Description
11 Driver_O Transducer driving output
2
3
4
5
6
7
8
HP_O
HP_I
LP_O
LP_I
High pass filter output
High pass filter input
Low pass filter output
Low pass filter input
12
13
14
15
16
17
18
Ftrace
ORC1
ORC2
ORC3
CLK
Frequency tracing input
RC oscillator: terminal 1
RC oscillator: terminal 2
RC oscillator: terminal 3
System clock
Ground
Regulated voltage for internal
analogue devices
TCG_O Time controlled gain output
TCG_I Time controlled gain input
GR_O External adjustable gain output
GND
Vreg
9
10
GR_I
External adjustable gain input
19
20
Vcc
Vref
Power supply
Reference voltage output
ECHO Receiving echo input
Application Circuit: for car reversing aids (values should be changed for other applications)
Vref
Vcc
Ultrasonic Transducer
400EP14D
BAV99
D1
3
4
100
220u
1
2
Vref
Vcc
Vreg
20K
R4
C2
D2
R3
1K
22p R1
IFT
C1
47K
R2
Vref
100u
100u
100u
BSS123
Vcc
Vcc
660KHZ
15
20
19
18
17
16
14
13
12
11
3
2
1
3
2
1
3
2
1
6.8K
PW0268
MMBT3904
10K
1
2
3
4
5
6
7
8
9
10
Echo High Level Pulse
2200p
4.7K
4.7K
2.7K
470p
BAV99
10n
MCU
39K
680p 680p
13K
470p
Vref
Vref
Vref
4
ETC [ ETC ]
